Method for controlling line pressure of automatic transmission

A method for controlling a line pressure of an automatic transmission, and controlling the line pressure when oil is supplied to elements of the automatic transmission through hydraulic passages and valves of a valve body at the time of initially starting a vehicle includes a line pressure setting o...

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Bibliographische Detailangaben
Hauptverfasser: Lim, Jin Seung, Hong, Sa Man, Lee, Seung Jin, Lee, Hyun Ku, Kim, Moo Suk
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method for controlling a line pressure of an automatic transmission, and controlling the line pressure when oil is supplied to elements of the automatic transmission through hydraulic passages and valves of a valve body at the time of initially starting a vehicle includes a line pressure setting operation of setting the line pressure of the automatic transmission to be equal to or lower than a set pressure when a vehicle is initially started, and a line pressure converting operation of converting the line pressure into a pressure equal to or higher than the set pressure when the automatic transmission is operated for shifting or when a set time has lapsed since initial vehicle starting.